写一段opencv c++调用摄影头，可识别蓝绿色的代码

以下是一段可以调用摄像头并识别蓝绿色的 OpenCV C 代码：

#include <opencv2/opencv.hpp>

using namespace cv;

int main()
{
    VideoCapture cap(0);

    if (!cap.isOpened())
    {
        return -1;
    }

    namedWindow("Camera", WINDOW_NORMAL);

    while (true)
    {
        Mat frame;
        cap >> frame;

        if (frame.empty())
        {
            break;
        }

        Mat hsv;
        cvtColor(frame, hsv, COLOR_BGR2HSV);

        Mat mask1, mask2;
        inRange(hsv, Scalar(90, 70, 70), Scalar(130, 255, 255), mask1);
        inRange(hsv, Scalar(50, 70, 70), Scalar(70, 255, 255), mask2);

        Mat mask = mask1 | mask2;

        Mat res;
        bitwise_and(frame, frame, res, mask);

        imshow("Camera", res);

        if (waitKey(1) == 27)
        {
            break;
        }
    }

    cap.release();
    destroyAllWindows();

    return 0;
}